Problem with English content

[weblimon]

Hello!
I am using Joomla! 2.5.6 + Joomlart template + sh404sef. Multilanguage site with Russian and English language. Russian content displays perfectly with sh404sef and without, but when I click on English main menu it's redirected to Russian content. That happen when I use sh404sef.
When I turn off sh404sef and activate standard Joomla language filter in English version on my site I don't see latest materials, popular materials, and when I click on a category it's displayed only information about category, but not a material list.
My site is http://dieza.net
I set up multilanguage with instructions, I had read book about Joomla 2.5, try whit Beez2 template - same problem. Sh404sef support says that I must fix multilanguage problem with standard Joomla plugins. Please help me or tell what it can be?

[infograf768]

It is quite impossible to help you with sh404sef in the way.

Make sure first that you have followed exactly the tutorial (you have access to back-end there to check how it is done)
http://multilingual.demojoomla.com/mult ... steps.html

[weblimon]

Thank you for answer!
I don't ask to help me with sh404sef. In attachments screenshots I'm using standard Joomla plugins. I'd checked one more time - settings are the same. Maybe I have problems with English language module. Can I reinstall it? And how?